In this paper, echo cancellation is done using genetic algorithm (GA). The genetic algorithm is implemented by two kinds of crossovers; heuristic and microbial. A new procedure is proposed to estimate the coefficients of adaptive filters used in echo cancellation with combination of the GA with Least-Mean-Square (LMS) method. The results are compared for various values of LMS step size and diff...

Purpose: To enable 2D Nyquist ghost correction for multi-band interleaved echo-planar imaging (EPI) without reference scan. Methods: phase errors between positive and negative echo were directly measured from the EPI data acquired with alternating readout polarity, then corrected by using multiplexed sensitivity encoding (MUSE) framework. The proposed method was tested on brain under different ...

Background—Noninvasive cardiac evaluation is of great importance in transgenic mice. Transthoracic echocardiography can visualize the left ventricle well but has not been as successful for the right ventricle (RV). We developed a method of transesophageal echocardiography (TEE) to evaluate murine RV size and function. Methods and Results—Normoxic and chronically hypoxic mice (FIO250.11, 3 weeks...

B A Popescu, F Antonini-Canterin, P L Temporelli, P Giannuzzi, E Bosimini, F Gentile, A P Maggioni, L Tavazzi, R Piazza, L Ascione, I Stoian, E Cervesato, A C Popescu, G L Nicolosi, for the GISSI-3 Echo Substudy Investigators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

L Ascione, F Antonini-Canterin, F Macor, E Cervesato, F Chiarella, P Giannuzzi, P L Temporelli, F Gentile, D Lucci, A P Maggioni, L Tavazzi, L Badano, I Stoian, R Piazza, E Bosimini, D Pavan, G L Nicolosi, on behalf of the Gissi-3 Echo Substudy Investigators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Abstract Background Both electrocardiographic left ventricular hypertrophy (ECG-LVH) and echocardiographic LVH (echo-LVH) are associated with higher risk of cardiovascular sudden cardiac death. ECG-LVH seems to be partly distinct from echo-LVH as many subjects do not have vice versa. The difference between sexes been studied earlier. Purpose aim this study was determine sex differences in preva...

BACKGROUND Noninvasive cardiac evaluation is of great importance in transgenic mice. Transthoracic echocardiography can visualize the left ventricle well but has not been as successful for the right ventricle (RV). We developed a method of transesophageal echocardiography (TEE) to evaluate murine RV size and function. METHODS AND RESULTS Normoxic and chronically hypoxic mice (F(IO2)=0.11, 3 w...

hepatomegaly, decrease in the liver paranchymal echo and increase in the gallbladder wall thickness has been shown in acute viral hepatitis. the present study was done to determine sonographic changes in acute viral hepatitis. we performed liver and bile ducts sonography and specific tests on 42 patients (mean age: 31.5 and 61% male) with acute viral hepatitis. gallbladder wall thickness was se...

This study presents a new algorithm for cancelling the acoustic echo, which is a major problem for handsfree communications. The proposed adaptive Acoustic Echo Canceller algorithm is designed and developed using a digital signal processing technique in frequency domain. The main scope of this study is to implement this module, benefiting the advantage of circular convolution properties and Fas...